Which conclusion does the following fact support? Agricultural scientists are able to fortify foods with vitamins that are lacking in certain regions around the world.

1. Most of the food that we eat has been altered or added to in some way.
2. Agricultural science contributes to a healthier world population.
3. Genetic modifications and hormonal additives pose health risks.
4. Advancements in agricultural sciences are necessary to end hunger.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.